Phase Change Microcapsule Composite Material with Intelligent Thermoregulation Function for Infrared Camouflage

Area of Science:

• Materials Science
• Textile Engineering
• Military Technology

Background:

• Infrared detection poses a significant threat to soldiers and equipment.
• Development of advanced camouflage materials is crucial for military effectiveness.
• Existing materials often lack dynamic temperature regulation and emissivity control.

Purpose of the Study:

• To develop infrared camouflage textile composites with intelligent temperature adjustment and reduced emissivity.
• To investigate the effect of phase change microcapsules and copper powder content on camouflage properties.
• To compare different preparation methods for optimal performance.

Main Methods:

• Preparation of polyurethane-based textile composites incorporating phase change microcapsules.
• Utilizing coating and dip-rolling methods for material finishing.
• Characterization using differential scanning calorimetry, temperature change tester, infrared emissivity tester, and infrared imager.

Main Results:

• Coating method superior to dip-rolling for temperature regulation.
• Optimal temperature regulation and camouflage effect observed at 27% microcapsule content.
• Composite with 27% microcapsules and 20% copper powder achieved an infrared emissivity of 0.656 (2-22 μm) and reduced skin temperature by over 6 °C.

Conclusions:

• The developed infrared camouflage textile composites exhibit excellent heat storage and temperature regulation.
• The material effectively reduces infrared radiation and enhances survivability.
• Findings provide a valuable reference for laboratory and industrial production of advanced military textiles.